Zatvarač (m)
From "zatvarati" [to close]; Non-return valve of the blowpipe; Prkovci Stari.
Širola, Božidar: Sviraljke s udarnim jezičkom [Aerophones with a beating tongue]. Zagreb, 1937, p.180, 183*, 184, 195, 238.
Gojković, Andrijana: Narodni muzički instrumenti [Folk musical instruments]. Beograd, 1979 (»Širola [129]).